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  1. kellys_eye

    Can I replace a fused UK plug with a regular plug?

    Whatever local safety standards are in place are irrelevant to the thread and the OPs needs however the use of a fuse will mean the fuse blowing rather than the breaker on the board. Fuses are put there for a reason, not decoration, but that's always down to what your local regulations call for...
  2. kellys_eye

    ESN

    You have to take the first 3 digits of the DEC number and convert that to HEX. The remaining digits are also then converted to HEX and the two results 'pasted' together. so for 123456789.... 123 converts to '7B' 456789 converts to '6F855' the 'answer' then becomes 7B6F855 The key is the...
  3. kellys_eye

    ESN

    The HEX result of converting 63843 is F963.... Just ask the result from Google!
  4. kellys_eye

    Voltage Regulator Build

    Possibly derived from an isolation transformer???? 60-0-60 with the centre-tap fixed to ground??? Such transformers are used as 'site transformers' for portable power tools. Either way it's going to be 120V AC as the main source supply therefore any standard (linear or SMPS) power supply...
  5. kellys_eye

    Diy multi bank battery charger

    Simple charge/discharge cycling can restore 'some' lead-acid batteries but unless you have a means of testing the capacity of the battery (its ampere-hour value) you can't determine if what you're doing is actually worthwhile. Such capacity testers aren't expensive nowadays but you can achieve...
  6. kellys_eye

    Problem Power Supply

    Making the output stabilised would be a good idea but considering the cost of such ready-made devices these days it would be a fruitless exercise.
  7. kellys_eye

    Can I replace a fused UK plug with a regular plug?

    The fuse (in the UK plug) is there to protect the cable (not the equipment - a common misunderstanding) so a fuse should be part of the wiring in whatever country of use. If it's not in the plug it will be in the equipment itself. Clearly the Dremel does NOT have an internal fuse so simply...
  8. kellys_eye

    Call or Signal Box for Warehouse

    Get a wireless doorbell - many, many versions available these days. Simple matter to fix a manually resettable external alarm to it (locking relay or resettable monostable etc).
  9. kellys_eye

    Board design help! Some buttons and led on a perfboard

    You can purchase PCBs that have a copper layout identical to that of the stripboard therefore all you need do is transfer the design from one to the other. 'Delete' all the inbetween strips that aren't used to reduce the physical length of the board. Here's one I found on eBay that's workable...
  10. kellys_eye

    Power resistor help

    Those components rarely fail unless they genuinely LOOK as if they've failed! Brown.... smelly etc! If they measure 'short circuit' then they're 'good-to-go' and you need to look elsewhere for the fault. Basically they are either open circuit or working......
  11. kellys_eye

    Need Help With An Idea

    There are digital versions too. I recall a DIY design from a number of years ago that gave a simple numeric display for any wire in a multi-core situation.
  12. kellys_eye

    Maximum battery charging using small generator idea

    The output will also still be AC..... Best bet would be to use a small motor/generator set that has a simple car alternator on the driven side. Many DIYers have made such setups using old mower motors (I have one!) that can deliver 120 amps at 12V - I use two alternators.
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